Bug #761

Error 1:
<pre>
END OF START[xcb] Unknown request in queue while dequeuing
[xcb] Most likely this is a multi-threaded client and XInitThreads has not been called
[xcb] Aborting, sorry about that.
java: ../../src/xcb_io.c :179 : dequeue_pending_request: l'assertion « !xcb_xlib_unknown_req_in_deq » a échoué.
</pre>

Error 2:
<pre>
[xcb] Unknown sequence number while processing queue
[xcb] Most likely this is a multi-threaded client and XInitThreads has not been called
[xcb] Aborting, sorry about that.
java: ../../src/xcb_io.c :274 : poll_for_event: l'assertion « !xcb_xlib_threads_sequence_lost » a échoué.
</pre>